I too prefer the more humiliating (and therefore funny) image of the devil!
I'm always amazed to think of how comparatively simple is God's image of the Blessed Virgin Mary in the Tilma of Guadelupe. From the images I've seen of it, there's no hint that it was miraculously created. God could have made it visually extraordinary in some way, but He chose to have it look almost like any young artist might have painted it.
This is one of my favorite images:
It's the parable of the vineyard where 'the first shall be last, and the last, first'. I like the look on the face of one of the envious 'firsters', and the benevolent look on the Owner's Face.
Another thing I find amazing is this:
It looks so stiff - almost like a mannequin. But it's a miraculous statue of Our Lady of Mount Carmel - the instrument of countless miracles. Nothing special technically, but even without the miraculous aspect, it looks so chaste and innocent.